Adaptive immunity is the protection of a host organism from a pathogen or toxin. It is mediated by B cells and T cells, and is characterized by immunological memory. Adaptive immunity is highly ...

Adaptive optics is a branch of optics and photonics that uses light-controlling components to actively correct distortion in an incoming image. These distortions can occur when light from an ...

Daniel Liberto is a journalist with over 10 years of experience working with publications such as the Financial Times, The Independent, and Investors Chronicle. Erika Rasure is globally-recognized as ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

Followers want comfort, stability, and solutions from their leaders. But that’s babysitting. Real leaders ask hard questions and knock people out of their comfort zones. Then they manage the resulting ...